Migrating to Angular 2 (Video 16)

The video tutorial guides viewers through transitioning from Angular 1 to Angular 2 by reorganizing code, creating a Weather Service for dependency injection, and implementing HTTP requests using RxJS. It covers integrating the Weather Service into existing components, developing new components to replace controllers, and updating modules and HTML. The tutorial concludes with finalizing the migration to Angular 2.

What is the primary reason for moving business logic to a new Weather Service in Angular 2?

• To use dependency injection instead of events and callbacks

• To increase the complexity of the application

• To make the code less readable

• To ensure compatibility with Angular 1

Which function is used in Angular 2 to specify that a JSON object should be parsed in the response?

• forEach

• filter

• reduce

• map

What is the purpose of the arrow function syntax in Angular 2?

• To remove the need for parameters

• To replace all functions with classes

• To provide a shortcut for regular function syntax

• To make functions longer

How is the Weather Service used in the forecast component's HTML template?

• By directly embedding JavaScript code

• By using the Weather Service to retrieve icons

• By importing it as a module

• By using it as a CSS class

What new feature in Angular 2 allows creating a reference to an element?

• ngModel

• ngIf

• ngRef

• ngFor

What is the main change when updating templates to Angular 2 syntax?

• Using Angular 1 directives

• Embedding HTML within JavaScript

• Updating to Angular 2 component syntax

• Removing all HTML elements

What is the final step before fully migrating to Angular 2?

• Using the new component router and bootstrapping with Angular 2 only

• Adding more Angular 1 controllers

• Removing all components

• Reverting back to Angular 1